Convertr

PEF to ICO Converter

Convert your Audio, Video and other Files from one format to another online for free!

Convert image files

PEF

PEF is the camera RAW format of Pentax digital cameras. It stores unprocessed sensor data for later adjustment of exposure and color. PEF files need RAW-capable software, so they are often converted to JPG, PNG, or TIFF.

ICO

ICO is the icon format of Microsoft Windows. A single ICO file can hold several images in different sizes, such as 16x16, 32x32, and 256x256 pixels. ICO files are used for application icons and website favicons.

What happens when PEF becomes ICO

Source format

PEF is the image source or target format for this conversion path.

Target format

ICO is the image source or target format for this conversion path.

What changes

The PEF pixels are decoded and written using ICO compression and color capabilities.

What is preserved
Pixel dimensions and visible composition are preserved unless resize or crop settings are selected.
What may be lost
Layers, editable vectors, camera-raw controls, animation, high bit depth, and metadata are preserved only when ICO supports them.
Codec and quality implications
Color profile handling, bit depth, chroma sampling, and compression settings can change appearance or file size.
Realistic limitations
Multi-page, layered, animated, camera-raw, or very large images may be flattened, reduced to one frame, or rejected if the decoder cannot safely read them.

Conversion steps

  1. Upload a PEF file no larger than 1 GB.
  2. Confirm that ICO is selected as the target.
  3. Download the ICO file and check the result before deleting your source.

Troubleshooting

The PEF file is rejected or will not open.
Confirm that the file is not empty, password-protected, or corrupt and that its real format matches the extension.
The ICO file is larger than expected.
Choose a more efficient codec or lower quality setting when available. Lossless and uncompressed targets are often larger by design.
Transparency, color, or animation changed.
Choose a target that supports the needed feature and keep the original file; JPG cannot store transparency or animation.

Privacy and file retention

Uploads and converted files are processed automatically and irreversibly deleted within 24 hours. You can delete them sooner with the delete control. Convertr does not read, mine, sell, or manually review file contents.

Read the privacy policy

Useful alternatives

PEF to AVIFUse this when AVIF better matches the app, codec, or editing workflow you need.PEF to BMPUse this when BMP better matches the app, codec, or editing workflow you need.

Need the embedded camera preview or RAW details?

Inspect the uploaded RAW structure or copy a validated camera-generated JPEG preview byte-for-byte without performing a new demosaic.